Magnetic intensifies



C. B. RUSSELL. MAGNETIC INTENSIFIER. APPLICATlON FILED AUG. 15. 1919.

Patented Oct. 12, 1920.

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C. B. RUSSELL.

MAGNETIC INTENSIFIER- APPLICATION FILED AUG. 15, 1919.

M wily Patented Oct. 12,1920.

2 SHEETS-SHEET 2 lie U626t CHARLES 1B. RUSSELL, OF BROCKTON,MASSAGHU'SETTS.

MAGNETIC INTENSIFIER.

Specification of Letters Patent.

Patented Oct. 12, 1920.

Application filed August 15, 1919. Serial No. 317,820.

To all whom it may concern- Be it known that I, CHARLES B. RUssnLL,

a citizen of the United States, and a resident of Brockton,Massachusetts, whose post-office address is No. 508 Kennedy Building, 1Brockton, Massachusetts, have invented an Improvement in MagneticIntensifiers, of which the following description, in connection with theaccompanying drawings, is a specification, like letters on the drawingsrepresenting likeparts.

".My present inventionrelates to'motors, and more particularly toamagnetic intensifier or electric motor of the reciprocating type inwhich a plurality' of impulses or strokes caused by the successiveattraction of a plurality of armatures is utilizedto impart acomparatively long stroke to a piston or other power member.

In electro-gravitating motors the imparting of energy to the system ofmoving weights to assist said weights in accomplishing their function,is essential to a proper functioning of the motor. To successfullyaccomplish theresults desired, itis essential that the motor be quickacting through a relatively long stroke, and as the ordinary electricreciprocating motor is incapable of any but an extremely short stroke, Iemploy the cumulative effect of the short strokes of a plurality ofsuperposed armatures, each armature being brought successively intoposition for maximum effective movement.

An object of my invention therefore is an improved magnetic intensifieror reciprocating motor of long stroke.

Another object of my invention is the provision of means in a device ofthe abovedescribed type in which the plurality of armatures are held outof engagement with each other and which are successively brought intooperative relation with energized electro-magnets.

Other objects will appear as the description of the inventionprogresses.

In the accompanying drawings illustrating the preferred embodiment ofmyinvention,

Figure 1 is a plan view,

. Fig. 2 is a sideelevation,

Fig. 3 is an end elevation,

Fig. 4 is a detail, supplementing the showing in Fig. 2,

Fig. 5 is a detail of the connection between the armatures and thepiston, and

Figs. 6 and 7 are views, in plan and elevation respectively, of thearmature holders.

In the drawings, 10 designates a base plate of suitable material, asaluminum or brass and which may be made of the shape and size,comparatively, shown to the left of the dotted line 30 in the drawings,or of the same width but twice, three times, etc, the length shown,should it be desired to mount two, three, or more of the devices on thesame piston, or extension thereof. The main portion of the base isrectangular in shape and extending outwardly therefrom at one end is thebearing plate 11, bearings 12, at both sides thereof, being formedintegral therewith. The main portion and extension 11 are provided withholes 13 through which screws or bolts pass for attaching the base inposition on the gravitating motor referred to above.

Integral with the base and near one end thereof, is a transverse plate14, on which is mounted, by bolts 15, the electro-magnets 16. Four ofthese magnets are shown, and I find these suflicient for the purpose,but it is obvious I may increase or diminish the number employed withoutdeparting from the spirit of the invention. Binding posts 17 on the baseadjacent the plate 14 are provided for connecting the magnets 16 in asuitable electric circuit. At the end of the main portion of the base 10remote from the plate 14 is a second plate or bearing member 18 lyingtransversely of the base and parallel to plate 14. A bearing 19 ismounted in said plate 18 and is in alinement with a bearing 20 locatedin the plate 14. Mounted for reciprocating movement in the bearings 19and 20 and parallel to the axes of the electro-magnets 16 is a piston21,-as clearly shown in Figs. 1, 2 and 3.

Mounted on the piston 21 and rigidly secured thereto by the pin 22 issleeve 23, this sleeve being provded with the plurality of steps 24 ofequal length but differentdiameters, as clearly shown in Fig. 5.Slidably mounted on the steps 24 are the armature holders 25, one holderfor each of the steps 24, and each holder being a free sliding fit' onits associated step. on each end of the holders is a notch 26 whichslidably engages with the rod 27, attached at each end of the plate 18,by bolts 28, the rods 27 holding the plurality of holders in alinement.At one end of the cent al portion of the holders -are perforations 29,three in number, in which are driven pins 31, and,

referring particularly ,to. Fig. 1, it will be seen that the outer pinson the holder adjacent the'magnets 16, are engagedby the ends of thespring 32, while the center pin of the second holder isengaged by themiddle of the spring 32. This arrangement is continued throughout theseries of holders shown, and the springs are so proportioned that theholders are held out of engagement with each other. T he holders 25' areof any suitable non-magnetic material, as brass or aluminum, except theone remote from the magnets 16, which one is made of a good quality ofmagnetic material, as soft iron. Attached to the holders 25 at theendsofthe central portion thereof are armatures of suitable magneticmaterial';These armatures are so mounted as to be in alinementw1th'a'vert1cal pairof the magnets l6,as clearly shown in F 11 "The purpose of'malcing thelast or outer holder 25 of magnetic material is for complet ng themagnetic circuit when all the armatures 539, and through which power istransmittion.

completed by any suitable means.

ted from the motor above. described to any suitable mechanism. Attheother end of the shaft 34 is attached the boss. 40 having a lateralprojection 41, to which is attached the threaded endof the rod 42, thenut 43 acting as the lock nut to securely hold the rod 42 in position.Adjustably mounted on the rod 42, by the bolt 44, is; the weight 45. Aspoweris transmitted from'the motor during the downward movementof thepiston 21, the weight 45 assists in giving to "the piston the quick,sharp movement that aids the motorin accomplishing its tune- Theoperation is as follows: assuming that but a single series of theholders shown to left of Fig. 1 are involved and that all parts are inthe position therein shown, the circuit through the electro-magnets 16is The electro-magnets 16attract the armatures 33 on theholder 25a-djacent'their poleends, the remaining holders and attached armaaufresfollowing as a matter of course being assisted in such movement andretained in relative position with respect to the first said holder andarmatures by the springs 32,. This downward movement, or movelongitudinally with respect thereto,

m'enttoward the velectroemagnets 16 is as sisted. by the weight 45.Immediately the first pair of armatures engages with the ,pole ends ofthe 'electro-magnets 16, the circuit through such magnets remainingclosed,

.the second pair of armatures is attracted,

followed by the third, 'etc., in succession, until when the last pair isattracted, the magnetic circuit is completed, because of the fact thatthe lastholder 25 is composed of magnetic material. As the first pair ofarmatures are associated with the pole ends of the electro-magnets toobtain max mum efiiciency, and as each succeeding pair are movedwith'the first pair as a unit, and successively into position to'obtainmaxi,- mum efficiency, it will bef's'een that each pair of. armaturesimparts, what practically vamounts to a sharp blow to the'piston 21,

and that the rapid'succession of such blows moves the piston'through acomparatively 'longdistancathe result being lthat I obtain-an efficientlong stroke motor.

If more poweris desired than that obtained from a single series of pairsof armatures 25 and associated electro-magnets 16, I may lengthen thebase lO by adding the portion 46, as described above and placing thereona second series of pairs of armatures '25 and associatede'lectro-magnets'16,.- coupling the piston extension 47 to the piston 21by the coupling 48, thesets of: electro-magnets 16 being then connectedin series to attract the related pairs ofarmatures 33 on the sleeves 23simultaneously.

While I have described the preferred embodiment of my inventionsomewhatin'detail, it is to be understood that I may vary the size,shape. and arrangement of parts I herein shown within comparatively wide1 limits, without departing from the spirit of the invention. 1

, Having thus described my invention, what I claim as new and desire to,secure by Letters Patent, is; r d

1. In adevice of the class described, the

combination of an electromagnet, a plurality of ,armatures associatedtherewith and spaced apart therefrom and from each other,; means for,bringing each succeeding armature into operative relat on with saidelectromagnet as the preceding armature isattracted, and. means forcompleting thfimagnetic circuit for the ,electromagnet only upon theattractionof the last of the p'lu-' rality .of armatures. 7 1

2. In a device of the class described, the

combination of a' plurality of electromagnets arranged inpairs, apiston, arranged parallel to the axes 'ther.eof andslidable a steppedsleeve mounted on said piston, a plurality of holders, one for each stepof of armatures mounted on each of said the sleeve,flslidably mountedthereon, a pairholders, one armature of each pair being in alinementwith each other and with the axes of the pairs of electromagnets, andyielding means for holding each holder and associated armatures inoperative relation with, but out of engagement with, each other, wherebythe relative position of the armatures is maintained as they aresuccessively attracted by the electromagnets.

3. In a device of the class described, the

combination of a plurality of sets of electromagnets connected inseries, a plurality of sets of armatures, one for each set of elec-,

' tromagnets, a piston common to the sets of electromagnets andarmatures, the corresponding armatures of each set of armatures beingconnected to the piston for simultaneous action thereon, and means forholding the armatures of each set out of engagement with each other andfor bringing the same to be brought into operative relationsuccessively, whereby the piston is moved through a relatively longstroke by a succession of impulses.

In testimony whereof, I have signed my name to'this specification, inthe presence of two subscribing witnesses.

CHARLES B. RUSSELL.

WVitnesses:

RACHAEL L. CLARK, GEO. H. MAXWELL.

